From: Ingo Molnar <mingo@elte.hu>
To: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Andrew Morton <akpm@osdl.org>,
Thomas Gleixner <tglx@linutronix.de>,
Steven Rostedt <rostedt@goodmis.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/3] futex_find_get_task: don't take tasklist_lock
Date: Tue, 22 Aug 2006 12:44:46 +0200 [thread overview]
Message-ID: <20060822104446.GB28183@elte.hu> (raw)
In-Reply-To: <20060821170621.GA1643@oleg>
* Oleg Nesterov <oleg@tv-sign.ru> wrote:
> It is ok to do find_task_by_pid() + get_task_struct() under
> rcu_read_lock(), we cand drop tasklist_lock.
>
> Note that testing of ->exit_state is racy with or without tasklist
> anyway.
>
> Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
yeah. (We did this in the -rt tree for some time too, never saw any
problems.)
Acked-by: Ingo Molnar <mingo@elte.hu>
Ingo
prev parent reply other threads:[~2006-08-22 10:52 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-21 17:06 [PATCH 2/3] futex_find_get_task: don't take tasklist_lock Oleg Nesterov
2006-08-22 10:44 ` Ingo Molnar [this message]
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